NASA astronaut Zena Cardman has released remarkable footage showing the International Space Station executing a rare rotational maneuver described as a “cartwheel” over Earth, spanning a visual path from the Atlantic Ocean to the Pacific. The maneuver was conducted to facilitate a scheduled orbital reboost using propulsion support from SpaceX’s CRS-33 resupply mission, a routine but critical operation that keeps the station at its optimal altitude.

The ISS orbits low enough that traces of Earth’s upper atmosphere create measurable drag, gradually reducing its orbital height over time. Without periodic reboosts, this drag would lead to orbital decay, increasing propellant requirements for station-keeping and eventually posing long-term operational risks. Reboost maneuvers use visiting spacecraft thrusters to raise the station’s altitude, restoring its nominal orbit and ensuring continued safe operations for onboard crew and hardware.

To align properly for the burn, the station must adjust its orientation in a carefully choreographed attitude control sequence. The “cartwheel” captured in the video reflects this controlled rotation, which positions the propulsion vector for maximum efficiency while maintaining thermal, power, and communications constraints. Such maneuvers are precisely calculated to avoid stressing structural elements and to keep solar arrays and radiators within safe angular limits.

The CRS-33 vehicle provided the thrust required for the reboost, demonstrating the dual role of commercial cargo spacecraft in both logistics and orbital maintenance. This capability has become a key component of station operations, reducing reliance on dedicated propulsion modules and allowing mission planners to integrate reboosts into regular resupply timelines.

Beyond its operational significance, the footage offers a rare perspective on the dynamic nature of the station’s flight profile. While the ISS typically maintains a stable attitude relative to Earth for scientific experiments and communications, these reorientation sequences reveal the complex flight mechanics involved in sustaining a continuously inhabited orbital platform.

The maneuver underscores the ongoing collaboration between NASA and commercial partners in maintaining the ISS as a functional research laboratory. Regular reboosts, enabled by visiting spacecraft, remain essential to counter atmospheric drag and extend the station’s service life while ensuring a stable environment for microgravity research, technology demonstrations, and international cooperation in low Earth orbit.